1225405151 has 2 divisors, whose sum is σ = 1225405152. Its totient is φ = 1225405150.

The previous prime is 1225405147. The next prime is 1225405163. The reversal of 1225405151 is 1515045221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225405151 - 2² = 1225405147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1225405151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225404151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612702575 + 612702576.

It is an arithmetic number, because the mean of its divisors is an integer number (612702576).

Almost surely, 2^1225405151 is an apocalyptic number.

1225405151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225405151 is an equidigital number, since it uses as much as digits as its factorization.

1225405151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1225405151 is about 35005.7873929440. The cubic root of 1225405151 is about 1070.1054285146.

The spelling of 1225405151 in words is "one billion, two hundred twenty-five million, four hundred five thousand, one hundred fifty-one".